Table 8.

Results of two-way MANOVA for the PC1 and PC2 based on the data for each sampling day.

PC scores	Day	Source of variation	df	Sum of squares	Mean squares	Variance explained (%)	F	P
PC1	1	Strain (S)	1	2.88	2.88	3	0.4	P = 0.546
		Concentration (C)	2	9.85	4.93	9	0.7	P = 0.534
		S × C	2	1.69	0.84	2	0.1	P = 0.894
	15	Strain (S)	1	6.76	6.76	9	4.5	P = 0.056
		Concentration (C)	2	37.50	18.75	51	12.4	P = 0.001
		S × C	2	10.73	5.36	15	3.6	P = 0.061
	30	Strain (S)	1	0.55	0.55	<1	0.1	P = 0.802
		Concentration (C)	2	5.41	2.70	5	0.3	P = 0.728
		S × C	2	0.07	0.03	<1	0.0	P = 0.996
	60	Strain (S)	1	7.52	7.52	11	5.9	P < 0.050
		Concentration (C)	2	16.59	8.30	23	6.6	P < 0.050
		S × C	2	31.49	15.74	44	12.4	P = 0.001
	90	Strain (S)	1	0.49	0.49	3	1.1	P = 0.314
		Concentration (C)	2	4.77	2.38	28	5.3	P < 0.050
		S × C	2	6.37	3.19	37	7.1	P < 0.010
PC2	1	Strain (S)	1	0.00	0.00	0.00	0.0	P = 0.980
		Concentration (C)	2	29.43	14.72	57	8.0	P < 0.010
		S × C	2	0.45	0.23	1	0.1	P = 0.885
	15	Strain (S)	1	4.38	4.38	10	4.1	P = 0.066
		Concentration (C)	2	15.73	7.86	36	7.4	P < 0.010
		S × C	2	11.23	5.61	25	5.3	P < 0.050
	30	Strain (S)	1	0.00	0.00	<1	0.0	P = 0.971
		Concentration (C)	2	21.46	10.73	49	5.8	P < 0.050
		S × C	2	0.19	0.09	<1	0.1	P = 0.950
	60	Strain (S)	1	18.23	18.23	35	10.1	P < 0.010
		Concentration (C)	2	7.54	3.77	15	2.1	P = 0.167
		S × C	2	4.28	2.14	8	1.2	P = 0.340
	90	Strain (S)	1	3.97	3.97	23	14.4	P < 0.010
		Concentration (C)	2	5.23	2.61	31	9.5	P < 0.010
		S × C	2	4.51	2.25	27	8.2	P < 0.010

The effects in bold are significant at P < 0.05.